Github user holdenk commented on a diff in the pull request: https://github.com/apache/spark/pull/22010#discussion_r209340344 --- Diff: core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala --- @@ -95,6 +95,18 @@ class RDDSuite extends SparkFunSuite with SharedSparkContext { assert(!deserial.toString().isEmpty()) } + test("distinct with known partioner does not cause shuffle") { --- End diff -- Thanks!
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